/*******************************************************************************
 * Copyright 2010 Simon Mieth
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 ******************************************************************************/

package cn.kkdlk.parse.dxf.parser.filter;

import cn.kkdlk.parse.DraftDocument;
import cn.kkdlk.parse.common.Layer;
import cn.kkdlk.parse.parser.ParseException;


public class DXFStreamFrozenLayerFilter extends DXFStreamLayerFilter {
    private final DraftDocument doc;

    private boolean layersInitialized = false;

    public DXFStreamFrozenLayerFilter(DraftDocument doc) {
        this.doc = doc;
    }


    protected void startEntity(String type) throws ParseException {
        super.startEntity(type);

        if (!layersInitialized) {
            initializeLayers();
            layersInitialized = true;
        }
    }

    private void initializeLayers() {
        for (Layer layer : doc.getLayers()) {
            if (layer.isFrozen()) {
                exclude.add(layer.getName());
            }
        }
    }
}
